PID Controllers

A PID controller is a system used to automatically adjust a process to reach a desired goal. It works by measuring the current state (like temperature or position), comparing it to the target, and then calculating the needed correction. The correction is based on three parts: Proportional (how far off you are), Integral (the total accumulated error), and Derivative (how quickly the error is changing). Combining these helps the system respond accurately and smoothly, maintaining stability. PID controllers are widely used in manufacturing, robotics, and automation to keep processes precise and reliable.